Sea Water Pump Impeller Replacement Yanmar 2GM 2YM 3GM 3YM Replaces 128990-42200

Sea Water Pump Impeller for Yanmar

This sea water pump impeller for Yanmar engines replaces OEM part number 128990-42200 and delivers reliable cooling water flow for 2GM, 2YM, 3GM, and 3YM marine diesel engines.

Overview

A direct replacement sea water pump impeller designed for Yanmar marine engines, this component ensures efficient coolant circulation to prevent overheating. It is a critical maintenance part for Yanmar 2GM, 2YM, 3GM, and 3YM models, offering a cost-effective alternative to the original without compromising performance.

Built For Performance

• Precision-molded rubber blades for positive displacement and consistent flow
• Corrosion-resistant materials for long service life in saltwater environments
• Exact dimensions match OEM 128990-42200 for a secure fit
• Reinforced hub prevents distortion under high temperature and pressure
• Easy to install with standard tools, reducing downtime

Fits These Machines

• for Yanmar 2GM
• for Yanmar 2YM
• for Yanmar 3GM
• for Yanmar 3YM

On-The-Job Use

• Marine engine cooling systems for sailboats and powerboats
• Replacement during routine impeller maintenance intervals
• Emergency spares for long-distance cruises

Specs At A Glance

Good To Know

Q: What is the recommended replacement interval for this impeller? A: Typically every 200-500 hours or annually, depending on water conditions. Inspect for wear and replace if blades are cracked or brittle.

Q: Can this impeller be used in freshwater systems? A: Yes, it works in both freshwater and saltwater, but rinsing with fresh water after saltwater use extends its life.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.